Neoseiulella coreen Walter

Kanouh, M., Kreiter, S., Douin, M. & Tixier, M. - S., 2012, Revision Of The Genus Neoseiulella Muma (Acari: Phytoseiidae). Re-Description Of Species, Synonymy Assessment, Biogeography, Plant Supports And Key To Adult Females, Acarologia 52 (3), pp. 259-348 : 304-305

Neoseiulella coreen Walter

( Figure 21 )

Neoseiulella coreen Walter 1997: 336-337 . Neoseiulella coreen Walter, Moraes et al. 2004: 292 ; Chant and McMurtry 2007: 147.

Adult female ( Figure 21 a – d )

Dorsal shield ( Figure 21a ) — Dorsal shield is smooth: length 266 (261 – 270); width 132 (129 – 135) (at level of s4), 145 (139 – 150) (at level of Z1). Tuberculous ornements covering the lateral areas of the dorsal shield. Three pairs of large circular solenostomes (gd1, gd6, and gd9) and one pair of small and crescent-shaped solenostomes (gd8) on the dorsal shield. No poroid visible. Sub-lateral setae (r3 and R1) on the lateral margin. Dorsal shield bearing 19 pairs of setae all smooth and rising to tubercles, except Z5 slightly serrated: j1 16 (12 – 20); j3 22 (20 – 24); j4 24 (23 – 25); j5 29 (28 – 30); j6 30 (28 – 31); J2 28 (26 – 30); J5 9 (8 – 10); z2 18; z3 25 (23 – 26); z4 25 (24 – 26); z5 16 (15 – 17); Z1 31 (30 – 32); Z4 25 (24 – 26); Z5 31 (30 – 32); s4 23; s6 29; S2 30 (29 – 31); S4 24 (22 – 25); S5 20 (19 – 21); sub-lateral setae r3 22 (21 – 23) and R1 14 (12 – 15). Peritreme extending anteriorly to the level of j1.

Ventral shields ( Figure 21b ) — Sternal shield weakly sclerotized, 58 (54 – 62) long and 56 (55 – 57) wide (at level of ST2), smooth with three pairs of setae (ST1, ST2 and ST3) and two pairs of small poroids. A pair of metasternal setae (ST4) inserted on separate platelets accompanied by a pair of small poroids. Genital shield 95 (93 – 96) long and 39 (35 – 42) wide (at level of ST5), smooth. Four elongate platelets or genital sigilla separating genital and ventrianal shields folded under the genital shield. One pair of poroids close to the genital shield (ST 5) and 4 pairs of poroids around the genital shield. Ventrianal shield 79 (74 – 83) long and 47 (44 – 49) wide (at level of ZV2), smooth, with three pairs of preanal setae (JV1, JV2 and ZV2; JV3 absent), and without solenostome gv3. Four pairs of caudoventral setae (ZV1, ZV3, JV4 and JV5) on the integument surrounding the ventrianal shield. JV5 14 (13 – 15) long, smooth. Primary metapodal plate or inguinal sigillum 19 long and 2 (1.5 – 2) wide.

Spermatheca ( Figure 21c ) — Cervix 4 (3 – 4) long, U-shaped.

Chelicera ( Figure 21d ) — Two teeth and a pilus dentilis on the fixed digit. Movable digit 24 (23 – 25) long, edentate.

Legs — Measurements of legs: leg I 270 (268 – 272); leg II 205 (195 – 215); leg III 191 (188 – 194); leg IV 271 (268 – 274). Eight setae (2-2/1, 2/0-1) observed on the genu II. No macroseta on legs.

This species is easily distinghuished from the other species in the genus Neoseiulella by the tuberculous ornements on the dorsal shield, and by the small size and the shape of the ventrianal shield, which is narrowly vase-shaped.

Material examined — The female holotype and five female paratypes deposited in the UQIC, Department of Entomology , University of Queensland, St Lucia, Australia .

Adult male

Described by Walter (1997). We were not able to borrow any male type specimens of this species.

Previous reports — N. coreen is only known from Queensland ( Australia) on rainforest trees.

Figures

FIGURE 21: Neoseiulella coreen Walter. Female (holotype): a – dorsal shield; b – ventral shields; c – spermatheca; d – chelicera.